海洋深水立管涡激振动实验研究的发展状况

在海洋环境中,涡激振动(VIV)是流体固体藕合作用的结果,也是流体力学和结构力学的融合;但是耦合的作用力会降低立管寿命,立管一旦发生疲劳破坏,原油的泄漏不仅会使工程蒙受损失,还将引发严重的环境污染和二次灾害,因此深海立管的涡激振动在立管设计中是一个需要考虑的重要因素,近几十年里科研人员在此方面做了大量的研究工作。笔者以海洋立管为研究对象,总结了在流体和结构方面国内外学者对海洋立管涡激振动上的研究成果。为更进一步的海洋立管涡激振动研究提供了理论依据。

A Survey of Experimental Researches for Vortex-induced Vibration of Marine Deep Water Riser

As the marine oil field is turning to deep-sea exploitation in China,a large number of researchers began to focus on the vortex-induced vibration of the marine riser.In the marine environment,when the fluid passes the riser,alternative vortex shedding on the back leads to the riser vibration.Such a phenomenon is known as vortex-induced vibration（VIV）.This phenomenon is the result of fluid solid coupling,which is also a fusion of fluid mechanics and structural mechanics.However the coupling force will reduce the life of riser.Once fatigue damage occurs to the riser,oil spill will lead to the economic loss as well as serious environmental pollution and secondary disasters.So the vortex-induced vibration is an important factor to consider when designing the deep water riser.In recent decades,researchers have done a lot of research work in the field.In this paper,the domestic and foreign scholarsresearches concerning the vortex-induced vibration of the marine riser have been summarized,which provides a theoretical basis for further study of marine riser VIV,and has great reference value in engineering.